Mr Z.A, age 35, with no particular history.
He presented for consultation with bilateral low back pain. Clinically he was afebrile, with negative dipstick test; examination revealed a bulky mass occupying the right lumbar region.
Laboratory tests on biological samples detected that creatinine level was 18 mg per dL and that cytobacteriological examination of urine (CBEU) was sterile.
From the radiological point of view, abdominal ultrasound showed two bulky fluid-filled multi-partitioned renal masses which evoked multicystic kidney or a bilateral giant hydronephrosis. CT urography showed bilateral giant hydronephrosis with laminated renal parenchyma
A bilateral nephrostomy was performed, allowing the patient to evacuate approximately 5 liters of sterile urine. The anterograde pyelography showed similar findings to a bilateral junction syndrome, confirmed by dynamic scintigraphy.
Finally, we lost sight of the patient. A few months later, he returned with end-stage renal disease. Nephrologic follow-up had been recommended.
We present this observation to show the value of early diagnosis and of ureteropelvic junction syndrome monitoring.